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Is Rihanna giving Chris Brown a second chance--or did she just share a fleeting romantic moment with her ex?

Just one week after the 23-year-old "Run It!" singer appeared to cozy up with Nicole Scherzinger, Brown and his ex got hot and heavy with his former girlfriend while partying with her at NYC hotspot Griffin.

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At one point during the night, Brown climbed over his table to join Rihanna at hers. She then proceeded to take off his shirt before they began dancing and making out, according to an eyewitness at the club.

While Brown's model girlfriend, Karrueche Tran, was noticeably absent, other celebs that were also at the club last night, not with Brown and Rihanna, included Dave Chappelle, Tyson Beckford and Chris Rock.

Now we want to hear from you. Is this a good idea for Ri-Ri? Are you happy they're back together? Sound off in the comments.